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Validating the “Treatment Satisfaction Questionnaire for Medication” in Persian and Evaluating Treatment Satisfaction Among Patients With Psoriasis

Published:November 18, 2021DOI:https://doi.org/10.1016/j.vhri.2021.06.008

      Highlights

      • Treatment Satisfaction Questionnaire for Medication is a questionnaire that assesses patient treatment satisfaction. It has 4 sections and is scored out of 400. It has been translated into and validated in many languages; version II, however, did not have a Persian translation.
      • Psoriasis is an inflammatory skin condition, for which several treatments exist depending on the severity level. Treatment adherence and satisfaction is essential in managing it effectively, and studies have shown that patients experience more satisfaction with biologic use.
      • Treatment Satisfaction Questionnaire for Medication version II is valid and reliable in Persian.
      • Patients with psoriasis are significantly more satisfied with biologic treatments.
      • Patients are more satisfied with their treatments if they are older than 50 years, have less severe disease, or lack arthritis symptoms.

      Abstract

      Objectives

      Psoriasis is a dermatological condition often associated with systemic comorbidities such as arthritis. Because of the vital role of treatment compliance in improvement in patients’ condition and the scarcity of studies on this subject in Iran, we decided to measure and compare treatment satisfaction (as a predictor of compliance) of patients with psoriasis by using the Treatment Satisfaction Questionnaire for Medication (TSQM).

      Methods

      We administered the TSQM version II to adult patients with psoriasis, referring to the clinics and wards of the Razi hospital. First, we translated and investigated the validity and reliability of the TSQM in a group of 34 patients; then, we measured the satisfaction of 100 patients with psoriasis who were receiving topical, phototherapy, or systemic or biologic medications.

      Results

      Content validity was established by experts’ review of the translation and by comparing the results to those of previous studies. Then, reliability was confirmed by calculating reliability and agreement measures (Cronbach’s alpha = 0.864, intraclass correlation coefficient = 0.984, and Pearson’s correlation = 0.969). Biologic medications showed the highest satisfaction score in “effectiveness,” “convenience,” “global satisfaction,” and “total score” (P = .000). Topical treatments demonstrated the highest “side effects” score (P = .006). Patients older than 50 years were significantly more satisfied than younger patients (P = .029). Patients with a Psoriasis Area Severity Index of 5 or more and patients with psoriatic arthritis reported lower satisfaction (P = .012, P = .000). Treatment satisfaction of patients with arthritis was higher with biologic medications than with traditional systemic medications (P = .000).

      Conclusions

      TSQM, which had not been used in Persian before, is valid and reliable in Persian and provides reproducible results. Patients reported the highest satisfaction with the use of biologic agents, which was associated with age, Psoriasis Area Severity Index, and arthritis.

      Keywords

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